ui/gl/gl_surface_ozone.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/gl/gl_surface.h"
   6
   7 #include "base/logging.h"
   8 #include "base/memory/ref_counted.h"
   9 #include "ui/gfx/native_widget_types.h"
  10 #include "ui/gfx/ozone/surface_factory_ozone.h"
  11 #include "ui/gfx/ozone/surface_ozone_egl.h"
  12 #include "ui/gl/gl_implementation.h"
  13 #include "ui/gl/gl_surface_egl.h"
  14 #include "ui/gl/gl_surface_osmesa.h"
  15 #include "ui/gl/gl_surface_stub.h"
  16
  17 namespace gfx {
  18
  19 namespace {
  20
  21 // A thin wrapper around GLSurfaceEGL that owns the EGLNativeWindow
  22 class GL_EXPORT GLSurfaceOzoneEGL : public NativeViewGLSurfaceEGL {
  23  public:
  24   GLSurfaceOzoneEGL(scoped_ptr<SurfaceOzoneEGL> ozone_surface)
  25       : NativeViewGLSurfaceEGL(ozone_surface->GetNativeWindow()),
  26         ozone_surface_(ozone_surface.Pass()) {}
  27
  28   virtual bool Resize(const gfx::Size& size) OVERRIDE {
  29     if (!ozone_surface_->ResizeNativeWindow(size))
  30       return false;
  31
  32     return NativeViewGLSurfaceEGL::Resize(size);
  33   }
  34   virtual bool SwapBuffers() OVERRIDE {
  35     if (!NativeViewGLSurfaceEGL::SwapBuffers())
  36       return false;
  37
  38     return ozone_surface_->OnSwapBuffers();
  39   }
  40
  41  private:
  42   virtual ~GLSurfaceOzoneEGL() {
  43     Destroy();  // EGL surface must be destroyed before SurfaceOzone
  44   }
  45
  46   // The native surface. Deleting this is allowed to free the EGLNativeWindow.
  47   scoped_ptr<SurfaceOzoneEGL> ozone_surface_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(GLSurfaceOzoneEGL);
  50 };
  51
  52 }  // namespace
  53
  54 // static
  55 bool GLSurface::InitializeOneOffInternal() {
  56   switch (GetGLImplementation()) {
  57     case kGLImplementationEGLGLES2:
  58       if (gfx::SurfaceFactoryOzone::GetInstance()->InitializeHardware() !=
  59           gfx::SurfaceFactoryOzone::INITIALIZED) {
  60         LOG(ERROR) << "Ozone failed to initialize hardware";
  61         return false;
  62       }
  63
  64       if (!GLSurfaceEGL::InitializeOneOff()) {
  65         LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed.";
  66         return false;
  67       }
  68
  69       return true;
  70     case kGLImplementationOSMesaGL:
  71     case kGLImplementationMockGL:
  72       return true;
  73     default:
  74       return false;
  75   }
  76 }
  77
  78 // static
  79 scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface(
  80     gfx::AcceleratedWidget window) {
  81   if (GetGLImplementation() == kGLImplementationOSMesaGL) {
  82     scoped_refptr<GLSurface> surface(new GLSurfaceOSMesaHeadless());
  83     if (!surface->Initialize())
  84       return NULL;
  85     return surface;
  86   }
  87   DCHECK(GetGLImplementation() == kGLImplementationEGLGLES2);
  88   if (window != kNullAcceleratedWidget) {
  89     scoped_ptr<SurfaceOzoneEGL> surface_ozone =
  90         SurfaceFactoryOzone::GetInstance()->CreateEGLSurfaceForWidget(window);
  91     if (!surface_ozone)
  92       return NULL;
  93
  94     scoped_ptr<VSyncProvider> vsync_provider =
  95         surface_ozone->CreateVSyncProvider();
  96     scoped_refptr<GLSurfaceOzoneEGL> surface =
  97         new GLSurfaceOzoneEGL(surface_ozone.Pass());
  98     if (!surface->Initialize(vsync_provider.Pass()))
  99       return NULL;
 100     return surface;
 101   } else {
 102     scoped_refptr<GLSurface> surface = new GLSurfaceStub();
 103     if (surface->Initialize())
 104       return surface;
 105   }
 106   return NULL;
 107 }
 108
 109 // static
 110 scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface(
 111     const gfx::Size& size) {
 112   switch (GetGLImplementation()) {
 113     case kGLImplementationOSMesaGL: {
 114       scoped_refptr<GLSurface> surface(new GLSurfaceOSMesa(1, size));
 115       if (!surface->Initialize())
 116         return NULL;
 117
 118       return surface;
 119     }
 120     case kGLImplementationEGLGLES2: {
 121       scoped_refptr<GLSurface> surface;
 122       if (GLSurfaceEGL::IsEGLSurfacelessContextSupported() &&
 123           (size.width() == 0 && size.height() == 0)) {
 124         surface = new SurfacelessEGL(size);
 125       } else
 126         surface = new PbufferGLSurfaceEGL(size);
 127
 128       if (!surface->Initialize())
 129         return NULL;
 130       return surface;
 131     }
 132     default:
 133       NOTREACHED();
 134       return NULL;
 135   }
 136 }
 137
 138 EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
 139   return SurfaceFactoryOzone::GetInstance()->GetNativeDisplay();
 140 }
 141
 142 }  // namespace gfx